simonds



G. E. SIMONDS.

TUBULAR HEATER.

APPLICATIQN FILED OCT. 18. 1915.

Patented Aug. 1, 1916. 2 SHEETS-SHEET I 5 m w r 01% 01% r I m2 y 075witnesses G. E. SHVIONDS.

TUBULAR HEATER. 7

APPLICATION man OCT. 1a. 1915.

1 193 304, Pal-tented Aug. 1,1916.

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GEORGE E. SIMONDS, 0F MINNEAPOLIS, MINNESOTA, ASSIGNOR T0 DOMESTIC ENGI-NEERING- COMPANY, OF MINNEAPOLIS, MINNESOTA, A CORPORATION OF MINNE-TUBULAR HEATER.

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Specification of Letters Patent.

Patented Aug. 1, 1916.

To all whom it may concern Be it known that I, GEORGE E. SIMONDS, acitizen of the United States, residing at Minneapolis, in the county ofHennepin and State of Minnesota, have invented certain new and usefulImprovements in Tubular Heaters; and I do hereby declare the followingto be a full, clear, and exact descrip tion of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same.

My invention relates to tubular water heaters that are especiallyadapted for use in connection with hot water heating systems; and, tothis end, generally stated, it consists of the novel devices andcombinations of devices hereinafter described and defined in the claims.

In the accompanying drawings, which illustrate the invention, likecharacters indicate like parts throughout the several views.

Referring to the drawings, Figure 1 is a transverse vertical sectiontaken on the line 00 m of Fig. 2, some parts being broken away; Fig. 2is a longitudinal vertical section taken on the irregular line m m ofFig. 1; Fig. 3 is a fragmentary detail view taken on the line :0 00 ofFig. 1, on an enlarged scale; and Fig. 41 is a detail view in,

section of a portion of-the casing, on an enlarged scale.

The entire heater is supported on a cast metal base, 1, open at itsfront end, and affords the firepot and ashpit of the heater. The front 2of the heater is also made from cast metal, extends from the floor-lineto the top of the heater and closes the open front end of the base 1. Tothis front 2, is hinged a stoking door 8, an ash door 4: and a cleanoutdoor 5. It is, of course, understood that the doors 3, 1 and 5 may bemade single or double, depending on the size of the heater.

A grate 6 made in two sections is mounted in the base 1 between the fueldoor- 3 and the ash door 4:. Each grate section ismade up of a pluralityof laterally spaced bars 7, eachhaving a depending arm 8 and trunnions9. The arms 8 of each grate section are connected by a rocker bar 10,provided for shaking the respective grate sections. As best shown inFig. 1, the grate sections are set oblique in hopper-like arrangement sothat the fuel will work to the center of communication therewith.

spaced, one pair above the other.

the grate. The trunnions 9 on the upper ends of the grate bars 7 arejournaled in segmental seats 11, formed in the side walls of the base 1,and the trunnions 9 on the lower ends of said bars are journaled insegmental seats 12, formed in a heavy bar 13. This bar 13 is removablysupported at its ends in U-shaped brackets 1-1, one of which isintegrally formed with the rear wall of the base 1 and theother of whichis formed on the front 2.

Extending from the front to the rear of the heater, is a relativelylarge header 15 and a relatively small header 1G, vertically spaced,theformer above the latter. These headers 15 and 16 are connected by amultiplicity of upright water tubes 17 and have The water tubes 17 arespaced one directly back. of the other with considerable clearancebetween adjacent pairs of tubes. The lower header 16 is spaced above thegrate 6 a distance sufficient to give the firepot its required depth.Each upright water tube 17 is provided with a multiplicity of pairs ofoppositely projecting water tube extensions 18, vertically The outer endof each water tube extension 18 is closed and theinner end thereof hascommunication with the respective upright tube 17 through upper andlower perforations or openings 19, formed in said tube 17.

On each side of the heater and extending parallel to the headers 15 and16, is a pair of manifolds 20 and 21 vertically spaced, the

former above the latter. Each pair of manifolds 20 and 21 is connectedby a plurality of upright water tubes 22, located one directly behindthe other. These water tubes 22 are laterally spaced substantially thesame as the water tubes 17 and are staggered with respect thereto. Thewater tubes 22 have communication with the manifolds 20 and 21 and areconsiderably shorter than the water tubes 17 thus bringing the lowermanifolds 21 substantially the same distance above the grate. sectionsas the header 16, and also bringing the upper manifolds 20 below theheader 15.

Each water tube 22 is provided with a plurality of laterally andinwardly projecting tube extensions 23, which overlap the tubeextensions 18 and are staggered, both horizontally and vertically withrespect thereto. These tube extensions 23 are also closed at their outerends and have communication with the water tube 22 in the same manner asthe tube extensions 18 have with the tubes 17.

The header 15 has communication with each manifold 20 through a pair ofcou pling water tubes 2% and the lower header 16 has communication witheach manifold 21 through a coupling water tube Each coupling water tubeat and 25 is made in two sections and the sections thereof are connectedby flange heads 26 detachably bolted together. The sections of thecoupling tubes 2% and 25, connected directly to the manifolds 20 and 21,have interposed therein elbows 27 which give the same the requiredshape, in order to make the proper connections between the headers andmanifolds.

All of the joints connecting the water tubes and the coupling tubes tothe headers and manifolds, and also, the joints connecting the tubeextensions to the upright tubes are formed by welding. It will thus beseen that the heater is made up of three sections or units detachablyconnected by the heads 16 and supported on the base 1.

in the form of asbestos plaster 28, applied to metal lath 29 and coveredon its exposed face with sheet metal 30. The two sides of the casingextend between the headers 20 and 21 and between the front casting 2 andrear wall of the casing. The rear wall of the casing is placed directlyagainst the exposed faces of the rearmost tubes 17 and 22 and tubeextensions 18 and 28. The rear end portions of the headers 16 andmanifolds 21 project through the rear wall ofthe casing, and thecoupling water tubes 25 are 10- cated entirely outside of the casing.The top of the casing extends betweenthe manifolds 20, below the header15, and rests directly on the uppermost tube extensions 18. The metallath 28 of the casing may be secured in position by wiring the same tocertain of the tubes of the heater, or securing the same in any othersuitable manner. The receiving end of the hot water distributing pipe 31caps the header 15 between the coupling tubes 26, as shown in Fig. 2,and the cold water return pipe is arranged to discharge into the rearend of the header 16. The smoke pipe 33 is secured to the rear wall ofthe casing, directly below the header 15.

Fuel is gravity fed onto the grate 6, at each longitudinal edge thereof,from magazines 23% secured one to each side of the heater. Thesemagazines 34 are formed from sheet metal and have oblique bottoms 35,which form outward extensions of the sections of the grate 6. Covers 36for the magazines are lunged at 37 to the sides of the casing. The lnneredges of the bottoms 35 rest on outwardly projecting flanges38,integrally formed with the base 1, and are rigidly seproducts ofcombustion and smoke retard the movement of the same through the heater,thereby increasing the efficiency of the heater. It will be noted thatthe uppermost horizontal row of extension tubes 18 is spacedconsiderably above the uppermost horizontal row of extension tubes 23 toafford a smoke passage, which permits a free movement of the smoke alongthe top of the heater to the smoke pipe 33.

By welding the joints of the tubes of the heater, it is possible toproduce a heater at comparatively small cost and to assemble the tubesin close arrangement with respect to each other. It is also possiblethat the several sections of the heater may be very quickly and easilyput together at the time the system is being installed. The casing forthe improved heater 1s When the above described heater is used inconnection with a steam plant, the terms used in connection with theabove described hot water system will be changed to accord therewith.

What I claim is:

1. A tubular water heater including upper and lower headers, upper andlower manifolds, two series of upright tubes, the one series connectingsaid headers and the other series connecting said manifolds, said twoseries of upright tubes having reversely projecting lateral tubeextensions, which overlap, the one series with the other and arestaggered, both horizontally and vertically, and coupling pipesconnecting the upper header with the upper manifold and the lower headerwith the lower manifold.

2. A tubular water heater including upper and lower headers, upper andlower manifolds, two series of upright tubes, the

one series connecting the headers and being.

welded thereto and the other series con necting the manifolds and beingwelded thereto, said two series of upright tubes having reverselyprojecting lateral tube extensions, which overlap, the one series withthe other and are staggered, both horizontally and vertically, andseparable coupling tubes, connecting the upper header with the uppermanifold and the lower header with the lower manifold.

3. A. tubular water heater including upper and lower headers, uppertubes connecting said headers, an upright manifold and a lower manifoldlocated on each side of the headers, upright tubes connecting the upperand lower manifolds on each side of the headers, the upright tubes ofthe headers having reversely projecting tube extensions, the uprighttubes of the manifolds having inwardly projecting tube extensions whichoverlap the tube extensions of the upright tubes of the headers, saidtube extensions being staggered both horizontal and vertical, and tubesconnecting the upper header with the upper manifolds and the lowerheader with the lower manifolds.

-l. A tubular water heater including upper and lower headers, uprighttubes connecting said headers and being welded thereto, an uppermanifold and a lower manifold located on each side of the headers,upright tubes connecting the upper and lower manifolds, on each side ofthe headers,

and being welded thereto, the upright tubes of the headers havingreversely projecting tube extensions welded thereto, the u n'ight tubesof the manifolds having inwardly projecting tube extensions Weldedthereto and which overlap the tube extensions of the upright tubes ofthe headers, said tube extensions being staggered both horizontal andvertical, and coupling tubes connecting the upper header with the uppermanifolds and the lower header with the lower manifolds.

In testimony whereof I aflix my signature in presence of two witnesses.

GEORGE E. SIMONDS. Witnesses:

CLARA DEMAREST, HARRY D. KILGoRn.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

